Direct Transformation of Allylic and Benzylic Thiols, Thioethers, and Disulfides into Organolithium Compounds
作者:Miguel Yus、Pedro Martínez、David Guijarro
DOI:10.1081/scc-120021518
日期:2003.1.7
Abstract The reaction of allylic and benzylic thiols 1, disulfides 3, and thioethers 4 and 5 with an excess of lithium and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB, 5 mol%) afforded the corresponding allylic and benzylic organolithium reagents via reductive cleavage of the carbon–sulfur bond. The generated organolithium compounds gave the expected products 2 by reaction with several electrophiles
摘要 烯丙基和苄基硫醇 1、二硫化物 3 和硫醚 4 和 5 与过量的锂和催化量的 4,4'-二叔丁基联苯 (DTBB, 5 mol%) 反应得到相应的烯丙基和通过碳硫键的还原裂解制备苄基有机锂试剂。生成的有机锂化合物通过与几种亲电试剂反应然后用水水解得到预期产物2。反应条件和锂化程序(Barbier 型方法的逐步)取决于起始含硫化合物。